IP Access Control With DDNS

I am searching for a IP Access Control Panel that supprots DDNS and no port forwarding if possible. The goal is to host the access control software on our servers or a "cloud" option from the manufactuer. I would like a plug and play solution for the installation tech. If the tech could plug the panel into the network and NOT port forward anything. I am trying to reach a 1 to 3 door market that usually doesnt have a IT Deparment and charge a monthly fee.

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